안드로이드 터치 이벤트가 발생하지 않으면 자동으로 뷰가 사라지는 효과

터치 이벤트가 더이상 발생되지 않으면 2초뒤 자동으로 View 의 가 사라지는 효과 적용

package lowmans.test.auto_fade_in_out;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.util.Log;

import android.view.MotionEvent;

import android.view.View;

import android.view.animation.AlphaAnimation;

import android.view.animation.Animation;

import android.widget.ImageView;

public class AutoFadeInOut extends Activity {

private ImageView iv;

private AlphaAnimation fade_in;

private AlphaAnimation fade_out;

private Handler handler = new Handler() {

@Override

public void handleMessage(Message msg) {

switch (msg.what) {

case 0:

fadeOutImage();

break;

}

super.handleMessage(msg);

}

};

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

iv = (ImageView) findViewById(R.id.img);

fade_in = new AlphaAnimation(1, 0);

fade_in.setDuration(2000);

fade_in.setAnimationListener(animationListener);

fade_out = new AlphaAnimation(1, 1);

fade_out.setDuration(1);

sendMsg();

}

private void fadeOutImage() {

if(iv.getVisibility() == View.VISIBLE){

iv.setAnimation(fade_in);

iv.startAnimation(fade_in);

}

}

private void sendMsg(){

handler.removeMessages(0);

handler.sendEmptyMessageDelayed(0, 2000);

}

@Override

public boolean dispatchTouchEvent(MotionEvent ev) {

switch (ev.getAction()) {

case MotionEvent.ACTION_DOWN:

iv.setVisibility(View.VISIBLE);

iv.setAnimation(fade_out);

iv.startAnimation(fade_out);

break;

case MotionEvent.ACTION_UP:

sendMsg();

break;

default:

break;

}

return super.dispatchTouchEvent(ev);

}

Animation.AnimationListener animationListener = new Animation.AnimationListener() {

@Override

public void onAnimationStart(Animation animation) {

}

@Override

public void onAnimationRepeat(Animation animation) {

}

@Override

public void onAnimationEnd(Animation animation) {

Log.i("Test" , "onAnimationEnd");

iv.setVisibility(View.INVISIBLE);

}

};

}